I don't know what a Ventaway toilet is. I am guessing it looks like a regular wall-hung toilet. Where is the tank?
Does it only leak when flushed?
In that case, the problem could be the neoprene or wax ring.
Fixing that will require pulling the toilet off of the wall. But other inspections should be made at the same time.
Do you like the toilet (flushes well, etc)? If not, you could change out the toilet at the same time.